<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
<form></form>
<div class="form-group">
    <label for="username">账号</label>
    <input type="text" class="form-control" id="username">

</div>
<div class="form-group">
    <label for="password">密码</label>
    <input type="password" class="form-control" id="password">
</div>
<button type="button" class="btn btn-primary">登录</button>
</form>
<br/>
<hr>
<form class="form-inline">
    <label for="username">账号1</label>
    <input type="text" class="form-control" id="username1">
    <label for="password">密码1</label>
    <input type="password" class="form-control" id="password1">
    <button type="button" class="btn btn-primary">登录</button>
</form>
</form>
</body>
</html>